Device for mounting electric wires.



G. P. JACOBSON.

DEVICE FOR MOUNTING ELECTRIC WIRES.

APPLICATION FILED-JULY 3.1915.

1,169,960. Patented Feb. 1, 1916.

k III/Al Q ISO GILLERT P. JACOBSON, OF LANSE, PENNSYLVANIA.

DEVICE FOR MOUNTING ELECTRIC WIRES.

Specification of Letters Patent.

Patented Feb. 1, 1916.

Application filed July 3, 1915. Serial No. 37,905.

.To all whom it may concern Be it known that I, GILIiERT P. J AooBsoN, a citizen of the United States, residing at .Lanse, in the county of Clearfield, State of Pennsylvania, have invented certain new and useful Improvements in Devices for Mounting Electric Wires; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in devices for mounting electric wires, and is particularly directed to the provision of means for mounting the feed line wires of trolley systems.

In trolley systems, particularly in mines, it has been heretofore the custom to secure the trolley wire to the roof of the mine and to secure the feed wire for this trolley wire to separate supports. This necessitates a great amount ofv trouble in boring holes in the wall of the mine to mount these separate supports.

It-is therefore the object of this present invention to provide a supporting means for such feed wires whereby the feed wires may be carried by the attaching means of the supports for the trolley wire.

- It is more specifically an object to provide such a feed wire securing means which is so formed that it may be readily associated with the conventional means now in use for supporting the trolley wires.

It is further an object to provide such an attaching device which is comparatively simple in nature and which may be readily positioned with relation to the securing means for the trolley wire so as to properly support the feed Wire.

With the above and other objects and advantages in view, the invention resides more particularly in the novel combinatlon. formation and arrangement of parts as more fully described hereinafter and pointed out in the appended claim.

Reference is had to the accompanying drawings, wherein similar characters of reference designate corresponding arts throughout the several views, and in w ich:

Fi re 1 is a side elevation of the structure or supporting a trolley wire and showing the feed wire attaching means associated therewith. Fig. 2 is a bottom plan view of what is shown in Fig. 1. Fig. 3 is a vertical sectional view taken longitudinally through the structure shown. is a perspective viewof the feed wire secur lng member detached.

Referring now more particularly to the accompanying drawings there is showna conventional means for securing a trolley wire, particularly as used in mines and which comprises a bell-shaped lock 5 which carries the clamps 6 for holding a trolley wire designated at 7. The top of this block is provided with lateral lugs 8 and bolts 9 are passed through said lugs and threadngly engaged in securing block 10 which in turn are held by tapered shanks 11 formed thereon and adapted to wedgingly fit in holes bored in the top of the mine.

The improved means for holding the feed wire designated at 12 comprises a plate 13 which is intermediately provided with a transversely extending slot 1a opening at one side of the plate and which is provided at one end portion with a longitudinal slot 15 opemng on said end. The plate is adapted to be disposed between the lugs 8 and the securing blocks 10, with the bolts 9 passing through the slots 14 and 15, these slots being so arranged that the plate may be inserted in place without detaching the block 5, and being further so arranged as to compensate for any variation in the distance between the bolts 8 so as to adapt the plate to be readily secured to various types of devices of this nature. Depending from one end of the plate is an insulating block 16 which is formed of insulating material and which carries an arm 17 also of insulating material and terminating at its free end in a head portion 18. This head is provided with an opening 19 which is elongated and an open slot 20 extends at an angle downwardly from one side of the head to the opening whereby the feed wire may be inserted in the opening. The feed wire is adapted to be clamped in the opening by a set screw 21 which is threadingly passed I through the end of the head. By this construction feed wires of various cross sectional shapes and sizes may be effectively held in clamped relation, the top portion of the opening being beveled, as at 22.

It may often be found desired to use the feed wire attaching means described in connection with trolley supporting devices which include only one securing block 10, and to facilitate this attachment the plate 13 is provided between the slots 14 and 15 Fig.

with an opening 13 adapted to receive the bolt which secures the wire carrying block to the attaching block, corresponding to the bolt 9. This structure is not illustrated, as it has no patentable distinction. It will also be noted that the specific wire holding means including the block 18 provided with its angularly disposed slots may be used in other connections than specifically with the attaching plate 13, as for instance it may be used on cross arms of poles for carrying wires of different natures. Thus an exceedingly simple device has been provided which may be readily secured in place with relation to the usual supporting means for a trolley wire to do away with the necessity for providing additional supporting means for the feed wire.

While I have illustrated and described a particular embodiment of my invention, I have merely done so for the sake of convenience and I do not wish to be limited to that particular embodiment as it is obvious that numerous changes may be made within the details of construction thereof without in any way departing from the spirit of the invention or exceeding the scope of the appended claim.

What I claim is:

A securing device of the class described, comprising a plate provided intermediately with a slot opening at one side and at one end with a longitudinal slot opening on said end whereby the plate may be secured, an insulating block carried at the other end of the block, and Wire holding means carried by said block.

In testimony whereof, I afiix my signa ture, in the presence of two witnesses.

GILLERT P. JACOBSON;

Witnesses:

CHAT. C. Howe, JOHN W. GRAY. 

